30690912 has 96 divisors (see below), whose sum is σ = 93139200. Its totient is φ = 8667648.

The previous prime is 30690889. The next prime is 30690923. The reversal of 30690912 is 21909603.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 30690912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73039 + ... + 73457.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 2^30690912 is an apocalyptic number.

30690912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30690912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46569600).

30690912 is an abundant number, since it is smaller than the sum of its proper divisors (62448288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30690912 is a wasteful number, since it uses less digits than its factorization.

30690912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 30690912 is about 5539.9379057892. The cubic root of 30690912 is about 313.0905296695.

The spelling of 30690912 in words is "thirty million, six hundred ninety thousand, nine hundred twelve".